Ancom's Aisle-Saver Lateral Tracking System is engineered to meet the most demanding needs and heaviest weight loads. Install over existing floor system and easily relocated. Pre-assembled modular deck. Can be expanded laterally and front to back. Available in double or triple row track. Has 4 smooth rolling wheels that roll on 1/2in steel rails. Carriage widths are 36in, 42in and 48in. Carriage depth available: 10in, 12in, 13 3/16in, 15in and 18in. Standard deck contained anti-tip. Optional over head anti-tip. Recommended for use with Ancom 6000, 2000, 4 post and stack-able shelving. Cabinets not included in prices. Raises cabinet height by 5in. Some assembly required. For pricing or order information please call us at 1-800-845-9010 or e-mail us at request@ancom-filing.com.